Cellulose or pyroxylin compound.



amass i on 114:. innmior'iianrimonn, Maximal), .ass euo'n or ousronzi'r n To aux No Drawing;

ro-aiiwham Ma ma; H

Be it known that I, PAUL H. A. Lanna, a

subject ofthe German Emperor, residing at Baltimore, in the Stateof Maryland, have inventedcertainnew and useful Improvements in Cellulose or' Pyroxylin Compounds; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art'to which it appertains to make anduse the same.

My invention relates to the manufacture of a cellulose or pyroxylin compound capable of use for many purposes as a. substitute for rubber, and-which, comparatively, costs much less, besides. having properties of'its own that render it valuable and efficient for various uses.

In order to produce my--new article I make a solution ofcellulosc or of celluloid in any well known solvent. thereof,- forexample, a mixture of alcohol and ether, and acetone are types, and I add to this solution of the cellulose or celluloid in'acetone, or in ether-alcohol mixture, :1 small percentage of a solution of sulfur dissolved-in chloroform, stir well, and allow to dry, or first work it up into the articles to bemade therefrom and then allow it to dry. Thedrying is preferably done in-closedchambers that are. exhausted and the vapors condensed for reuse.

,l find-that by addiu from three to ten per cent. of a saturated solution of sulfur, dissolved .in a suitable. solvent, to the cellulose or celluloid solution, the product will be rendered soft and pliable, the degree of pliability decreasing byinere'asing the percentag of the sulfur solution above three per cent. JVhen using celluloid as a starting material it is preferable to either wholly or partially de-camphorate it by treating it with a solvent of camphor, gasolene being well suited for the purpose.

The sulfur cellulose compound when mixed with a filler, as fine particles of cork,

asbestos, cotton fiber, mineral wool, or the like, makes excellent stoppers for bottles; it is also an excellent coating for cork stoppers, being acid-proof, odorless and tasteless, and

imparts neither odor nor taste to any food or beverage; \Vheu formed' into sealing disks or fruit jar rings, it is an excellent substitute for the rubber now used. It does not oxidize or rot, as do rubber rings.

iviimz; m; mmmnnafn NE-FOURTH marmosets ernoxrrn i coirroviibi normal :temperature.

rd ERNEST niauaap r, i or BAILTIMORE;

. s nw i p -L m at 1 Patented-boy.1,1910. Application filed 11111822, 1909. :Seria1Nfo.5o3,678.

I I claim- 1. The process,".whicl'1 comprises addingv to a solution of cellulose or'pyro x'ylin, a 50-" lution of sulfur, and evaporating to dryness at normal temperature. 1

2. The process, which comprises dissolving; cellulose-.01 py'roxylin in acetone and adding thereto a [solution of sulfur and evaporating to dryness'at -normal tempera .ture.

The process, which comprises dissolving cellulose or pyroxylni in a suitable solvent and adding theretoasinall percentage of a solution of sulfur dissolved in chloro-, form and evaporating to dryness at normal temperature.

4. The process, which comprises dissolving cellulose or: pyroxylin: in acetone and adding thereto between 'three and ten per cent. of a solution of sulfur dissolved in rhlorotorm and ei-aporatmg' to dryness at.

5; T he. process, which comprises dissolving cellulose or. pyroxylin in acetone and.

adding thereto sulfur dissolved. in chloroformand evaporating to dryness at normal temperature.

6. The process, which comprises adding to a solution of cellulose or pyroxylin, a soluto dryness atnormal temperature.

7. The process which comprisesl dissolving celluloseor pyroxylin in acetone and adding thereto a solution of sulfur and a filler and evaporating todryness at normal temperature.

8. The process, which con'iprises dissolving cellulose or pyroxylin in a suitable 501- tion of sulfur and a filler. and evaporating vent and adding thereto a small percentage of a solution of sulfur'di. olved 1n chloroform, and a filler andevaporatingto dryness at normal temperatilre.

9. The process, whichcomprises dissolving cellulose or .pyroxylin in acetone and adding thereto'sulfur dissolved in chloroform and a filler and evaporating to'dryncss atnormal temperature.

- 10. The process, which comprises dissolv- 'ing cellulose or pyroxylin in acetone and adding thereto between three and ten per cent; of a solution of sulfur dissolved in chloroform and a filler and evaporating t.) dryness at normal temperature.

11. The process,- which comprises adding to a solution of cellulose or pyroxylim-a solution'of sulfur, and asbestos, anti evaporat in}; to dryness at-normal temperature.--*

, 12. The process, which com i ises dissolving cellulose or pyroxylin in a. suitable sol:-

5 vent, andadding thereto a small percentage A adding thereto sulfur dissolved in chloi-oform, ancl asbestos end evaporating todi y jness at normal temperature.

' 15. Thepro'cess which comprises dissolva mg cellulose or-'pyroxy-lin in acetone, and 20 adding thereto bet-ween three and ten per cent. of :1 solution of sulfur, dissolved inchloi oform, and asbestos and evaporating to d 'ynessait normal temperature. J In testimony that I claim the foregoing 25 as my invention,- I have signed name in presence of two subscribing witnesses.

I PAUL H. A. LEDER. Witnesses:

LOUIS C. Annnns, CARL W. HEFi nNs. 

